The simulated component typically mirrors the physical TO-39 package pinout:
To run this in Proteus:
Warning: There is no official MLX90614 library distributed by Labcenter Electronics (Proteus developers). You will find files labeled MLX90614.IDX, MLX90614.LIB, and MLX90614.HEX on various engineering forums (Edaboard, TheEngineeringProjects, GitHub). mlx90614 proteus library
This simulation perfectly mirrors hardware behavior, saving you $25 on a real MLX90614 and hours of soldering. The simulated component typically mirrors the physical TO-39